William everett johnson



(No Model.)

W. E. JOHNSON. CENTRIPUGAL EXTRAGTOR.

Patented Nov. 29, 1892.

Arrow/Ey.

WIM/8858:

UNITED STATES PATENT OFFICE.

WILLIAM EVERETT JOHNSGN, OF NEW YORK, N. Y.

CENTRIFUGAL EXTRACTOR.

SPECIFICATION forming part of Letters Patent N o. 486,876, datedNovember 29, 1892. Application filed January 20, 1892 Serial No.418.624. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM -EvERErT JOHNSON, a citizen of the UnitedStates, residing at New York, in the county and State of New York, haveinvented a new and useful Centrifugal Extractor, of which the followingis a full, clear, and exact specification.

My invention relates to an improved centrifugal extractor; and itconsists in constructing the machine in the novel manner herein setforth.

The object of my invention is to facilitate the easy starting of themachine and to reduce almost if not entirely, when starting, thevibration of the shaft, which carries at its upper end the basket.

My invention is illustrated by the accompanying drawings, in which-Figure l is a vertical part-sectional elevation on the line l l, Fig. 2,of my improved centrifugal extractor. Fig. 2 is a part-sectional planview of Fig. l on the line 2 2.

A is an exterior casing having a suitable opening C at the top. Thecenter of the lower part of the casing is preferably slightly raised, soas to form around it the gutter B. The casing A is supported on hollowposts D D, which are preferably fitted to the casing at a point'wherethe gutter B is formed. (See Fig. 1.) Perforations are made in the lowerpart of the casing A directly over the hollow posts D D, so that anyliquid contained in the casing will follow the gutter B and run downthrough `the posts D D and out. Near the center of the raised portion inthe bottom of the casing a hole E is formed. Through this hole a shaft Fpasses. This shaft F has a suitable bearing G in the base H of themachine. At the upper end of this shaft F, which extends slightly intothe casing A, is fastened a supporting-frame, preferably consisting ofarms I I, which curve upward and hold the support J. Within this supporta ring or gimbal K moves freely on its pivoted bearings L L, saidbearings being supported at or near the top of two opposite arms I I orat any suitable point in the ring J, which is supported by the arms I I.Within the ring K is a perforated basket N, turning freely on itspivoted bearings M M, hung at right angles to the bearings of the ringK. The axis M M of the basket N is preferably slightly above the center,so that it will hangin an upright position. The basket N is preferablyabout spherical in shape with an opening at the top. To the shaft F isfastened a pulley O, around which runs a belt P.

In operation wet clothes or the like are thrown into vthe basket Nthrough the opening C in the outer casing A and the hole in the t-op ofthe basket. Wet clothes immediately finds a center directly over theshaft F by means of the gimbalbearings M M L L, balancing perfectly andequalizing the centrifugal forces when rotated. The shaft is thenrotated by means of the belt P running round the pulley O until such aspeed is attained as will by centrifugal force throw the liquidcontained in the clothes out through the perforations in thebasket intothe casing A, from whence it runs down v and out through the pipes D D.The Value of this invention can be appreciated by reference to thecentrifugal extractors (or drying-machines, as they are sometimescalled) now in use. All sorts of yielding bearings for the shaft F havebeen contrived, so that if the weight of the load carried by the basketN is off the center the shaft will take any position to allow theunequal weight to ap proach a center and facilitate starting themachine.

Experience demonstrates that itis almost impossible to start anunevenly-loaded basket to revolving if it is supported and turned by ashaft having non-yielding bearings, even if the weight be .no more thana wet sheet thrown into one side of the basket.

My invention does away with the necessity of a yielding bearing for theshaft F,for the instant any weight is placed within the basket it seeksa center directly over the center of the shaft F, and the mechanism maybe easily and quickly rotated without any perceptible vibration oryielding of the shaft.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, isn

l. In a centrifugal machine, a basket pivotally suspended in a ring fromwhich said basket depends, the said ring being pivotally supported in aframe carried by a shaft, substantially as described.

2. The combination, in a centrifugal ex- The Weight of these IOOtractor, of a basket A, mounted upon suitable pivots Within lthe 'ringK, said ring being pivotally mounted at right angles to the axis of thebasket in support I with a vertical shaft F, substantially as described.

3. The combination, in a centrifugal extractor, of the basket A and itspivot-bearing M M, supported in the ring K, said ringbeing supported byits pivots L L, which bear in the support J carried by the arms I I,with the shaft F and mechanism for rotating the same, substantially asand for the purpose shown and described.

